PL HEL a water sprinkler sprays water outward in a circular pattern. What is will be watered if the radius of the spray from the sprinkler is 18 ft? write the exact answer in terms of pi

It’s in apex and it’s due in 30 minutes

When conducting research for forming a hypothesis, which practice should historians follow?

The factory system of the early-19th century caused a) a decrease in farm production. b) an increase in rural population. c) an increase in urban population. d) high unemployment in other areas.